Research On Mobility Management Technology Without Infrastructure

At present most of the commercial network construction in a fixed infrastructure of network architecture,with a fixed infrastructure architecture provides the network security and the high quality service,but the corresponding limits the flexibility of the network,network flexibility in some more need of occasions,such as military,disaster relief,fixed infrastructure to build or destroyed,the network it is difficult to quickly set up in these scenarios.At the same time,most of the existing networks are managed by centralized management units,which can simplify the network management and avoid the huge cost caused by the flood of management data in the whole network.However,with the increase of Internet network traffic,the load of core units becomes heavier and heavier,which limits the scalability of the network.At the same time,if the centralized unit is attacked,it is likely to lead to the breakdown of the entire network,greatly reducing the security of the network.In view of the above problems,this paper proposes a distributed network architecture without infrastructure support.On this basis,a mobility management scheme for the network architecture is designed.The main work is as follows:(1)Since the mobile core network has no fixed infrastructure,it relies on high dynamic and weak connection in the communication scenario.In order to meet the needs of user terminals accessing the mobile core network through various heterogeneous ways,a unified network mobility management model is established and a simple and flexible mobility management architecture is designed.(2)The corresponding mobility management case is designed for the infrastructure of the infrastructure,including the initial access process,the guarantee process,and the switching process.In the guarantee process,a position push scheme is designed based on the anchor node position push,when the user completes the location update in the distributed network,the location information is pushed to the network,and the location of the user can be found correctly when the user is sent the data to the user in the network.The experiment shows that the use of anchor node push is more expensive than the traditional mobile IP scheme.(3)In view of this framework,an efficient and reliable access and handover control algorithm was first designed,namely a multi-objective handover algorithm taking into account both RSRP(Reference Signal Receiving Power)and load.The experimental results show that:When using this algorithm in the decision making will also consider access point RSRP and two factors service access point users,users in a relatively good service at the same time,the network load balance as possible,reduce the node to join into the network overhead,exit and switching network,meet the low Shi Yan Gao reliable,mobility,and so on service quality of different types of business experience.Secondly,on the basis of this architecture algorithm proposes a switching algorithm to meet the needs of special environment-multiple attribute switching algorithm based on prior knowledge,by predicting the user's mobile trend and the mobile area,and combining the network load and the reference signal received power analysis of multiple attribute decision parameters,so as to optimize the switching algorithm,complete the optimal target network switch.Experimental results show that the proposed algorithm can improve the user's handover success rate and the overall network throughput,and reduce the network load rate and average handover times.(4)Finally,in order to verify the feasibility and performance of the proposed scheme,this paper uses C++ to write code on OPNET simulation platform to carry out simulation and performance evaluation test of the proposed scheme.The results show that the overhead of distributed network is higher than that of fixed core network.But through the reasonable protocol design,can effectively reduce the network redundant overhead,and improve the security of the network.By comprehensive comparison,the network architecture and protocol scheme proposed in this paper are suitable for the network construction in the environment of disaster relief and military war.